Gas-engine.



No. 760,631. jPATENTED MAY 24, 1904.

W. M. JEWBLL.

"GAS ENGINE AIILIOA'IJION FILED MAY 1 1901- N0 MODEL. I 2 SHEETS-SHEET1.

' Inn 6M6??- v No. 760,631 PATENTED MAY 24:, 19 04.

V W." M. JEWBLL.

GAS ENGINE APPLIOATION IILED MAY}, 1961. i

F0 MODEL U I ED STATES" 1?a tentediiltay f PATENT ()FrficE. M

WILLIAM. M. JEWELL, or CHICAGO, LLINOIS.

. GAS-ENGINE.

srEcrrIcA'rIoN forming part of Letters Patent No. 760,631, dated May 24,1904: Y v Application filed May 6,1901. SeriaINo. 58,920. (No model.)

To all whom it concern Be it known that I, WILLIAM M. J EWELL, acitizenof the United'States, residing at Chicago, in-the countyof Cookand State of Illiprovide certain other improvements, which;

nois, have invented certain newand useful Improvementsin Gas-Engines, ofwhich the following is a specification, reference being had to "theaccompanying drawings. i

. My invention relatesto engines or motors operated by gases underpressure, and has particularly to do with engines of the typeillustrated and describedin my application for Patent No. 56,678, filedApril 20, 1901.

The object of my present invention is to pro vide certain improvementsin the devices for igniting'the gases'in machines of the typereferred toby which'the gases may be ignited by a flame instead of by electricity,to provide an improved arrangement for exhausting the spent gases fromthe piston-chamber, and to will be hereinafter set forth.

* That which I regard as newwill b 56 in the claims.

' In the accompanying drawings,'Figur e 1 is a plan view, partly insection, thef upper half of the valve-chamber casing being removed. Fig.2 is a vertical section on line 2 2 of Fig.

1, illustrating the igniting-apparatus Fig. 3 1s a plan view of thevalve mechanism, some parts being broken away. Fig. dis a partial Viewof the piston-chamber,-onehalf of the casing thereof being removed; andFig. 5 is an enlarged detail, being a vertical section of thepiston-chamber, illustrating the packing As described in my applicationabove re-v ferred to, the general type of engine, to which my presentinvention, relates comprises a plu: rality of chambers, preferably twoin number, one of said chambers being termedthe pistonchamber and theother the valve-chamber)? Inthe piston-.chamber-is. mounted apistonwhich moves in a circular'paththerein and is impelled by gas underpressure admitted to the piston-chamber at one side of the piston.

. The valve-chamber, from which gas under pressure is supplied to thepiston-chamber,

' communicates with said piston-chamber and is provided with valvemechanism which controls and regulates the admission of the gas tointersection. V ranged to supply the gas to the piston-cham-- berimmediately after the piston passes the chambers are arranged tointersecteach other at right'angles, the'point at which thegas isadmitted from the valve-chamber to the pistons chamber lying at thepoint of intersection of such chambers.- The valve mechanism,controllingthe admission of the gas to'the valve chamber moves in acircular path in the valvechamber, so that the valve mechanism and thepiston move through the spacevcommon to the two chambers, which liesatthe point of their The valve mechanism is arpoint of intersectionofthetwo chambers and as soon as gas has been supplied closes thepiston-chamber behind the piston,.so..tl1at the piston is operated to agreat extent ex pansion. Power is transmitted from the moving piston toash aft through a spokemounted on said shaft andeXtending'in-to'thepistonchamber through a narrow slot provided in the inner peripheryofthe piston-chamber, which slot is .closed by a-=rotating band, which v"fits therein and is connected to ,thespoke.

The valve mechanism is rotated fnomasomewhat similar shaft, whichreceivesfcitsgpower from the piston-shaft, the valyeimechanism beingconnected to itsshaft-abypneormore spokes, which operate in connectionwith a band similar to the band ofthepiston-chamber, operatingin asimilar: slot... Y

' With the foregoing. general description. I will now describein detailmy improyed engi ne as illustrated in the accompanyingdrawinjgs.

, Referring to the the valve cylinder, andv 7 the piston-Cylinder,

which, as shown in- Fig.1, arearrangedto intersect each other atright-angles Each of said cylinders preferably consists. of twosubstantially semicircular sections fitted together and secured byflanges 8 9 on. their outer pe} ripheries by means ofboltsv 10. Intheinner periphery of the-cylinder 7 and also of, the cylinder 6 is anarrow slotfextending entirely around the cylinder, in which is fittedan an nular band 11,]the outer surface of, which'is concave and conformstothe nner surface of the piston or valve chamber, as the case may Isaid piston-chamber. The valveandpi ston be. In the ease of thepiston-chamber said band 11 is connected by one or more spokes 12 to ashaft 13, arranged centrally of the piston-chamber and mounted insuitable bearings, so as to rotate freely. At the end of one of thespokes 12, within the piston-chamber, is mounted a segmental block orpiston 14, which in cross-section fits closely in the piston-chamber.Said block may be fixedly secured to the band 11, or the end of one ofthe spokes may extend through said band, fitting tightly therein andcarrying at its inner end the piston, as shown in Fig. 4. The band 11,as above stated, fits closely in the slot in the piston-chamber, and asit must rotate with the piston it is provided with suitableball-bearings at each side, as shown in Fig. 5. Such ball-bearings aresecured by providing recesses 15 16 in the chamber at opposite sides ofthe slot, bearing-rings 17 being mounted in said recesses and beingmovable therein toward and from the band 11.- The faces of saidbearing-rings adjacent to the said band are concave to' receive balls18, and suitable runways 19 are provided inthe sides of the band toreceive said balls, as shown in Fig. 5. The bearing-rings 17 areadjusted to adjust the ball-bearings by adjusting-screws 20, fitted inthe chamber, as shown. 1 I

The band 11 is packed to prevent the escape of gases from thepiston-chamber (a similar construction being used for the valve-chamberalso) by packing-rings 21 22, arranged at opposite sides of the band, asshown in Fig. 5, in the recesses 15 16, respectively, said rings beingadaptedto bear against the sides of the band 11, as shown. Springs 23are placed in the recesses 15 16, between the rings 21 22 and thesurface of the chamber, which act to press said rings against the sidesof the band 11. The bearing-surfaces of the rings 21 22 are lubricatedby oil supplied through ducts 24 in said rings, as shown in Fig. 5, theoil being introduced into the recesses 15 16 through passages'25, closedby caps 26. If desired, means may be provided for forcing the lubricatorthrough the ducts 24. As shown,

the packing-rings 21 22 are placed between the bearing-rings 17 and thepiston-chamber, and they are so placed that their innermost edges lie inthe angle formed by the inner edges of the band 11 and the adjacentinner surface of the piston-chamber, which are very nearly in contactwith each other. By this construction the packing rings effectuallyclose the very narrow slits between the band 11 and the adjacentportions of the chamber, thereby preventing the escape of gases.

27 indicates an exhaust-port formed in the piston-chamber a'shortdistance above the point of intersection of the piston and valvechambers, as shown in Fig. 4. Said port communicates Withan exhaust-pipe28, through which the spent gases are exhausted in the piston-chamber inadvance of the piston.

29 indicates the valve mechanism used where the piston-chamber isprovided with the exhaust-port 27. Said valve mechanism consists of twosections 3031, respectively, said sections being carried by spokes 32,radiating from a shaft 33, mounted centrally of the valve-cylinder. Thevalve-section 30 is not entirely tubular, as it extends through an arcof only about two hundred and seventy degrees or less, an arc of aboutninety degrees on its under side being cut away, as shown in Fig. 2. Theends of the valve-section 30 are closed by disks 34 35, therebyseparating the explosion-chamber from the section 31 of the valvemechanism. The section 30 of the valve mechanism is designed to receivea charge of gas to be exploded and conduct it to the piston-chamber,where it is exploded.

It also operates to prevent the escape of gas in an upward direction inthe piston-chamber after the explosion by closing the piston-chamber atthe point of intersection against the passage of gas thereinto in anupward direction, as described in my application above referred to. Tothese ends gas is admitted to the explosion-chamber of the valve-section30 from an inlet-pipe 36 through a port 37, placed about one hundred andthirty-five degrees from the point of intersection of the two chambersand provided with suitable valve mechanism, as described in my saidapplication. A charge of gas is supplied to the explosion-chamber ateach revolution of the valve mechanism as said chamber passes the port37, the charge of gas being then carried in the direction indicated bythe arrow in Fig. l to the point of intersection of the two chambers,where it is exploded. The explosion is effected by means of the flame 38of a burner 39 or other suitable device, placed opposite a perforation40 in the valve-chamber lying adjacent to the point of intersection ofthe two chambers inposition to be reached by the valve-section 30 beforeit arrives at such point of intersection. A portion of the valvesection30 extends down a sufiicient distance to cover and close the perforation40, such downwardly-projecting portion of the valveseetion 30 beingprovided with a perforation 41, adapted to register with the perforation40. The perforation 41 is placed at the forward portion of thevalvesection 30, as shown in Fig. 1, so that the two perforations 40 41will register as soon as the forward portion of the valve-section 30reaches said perforation 40. As soon as such perforations come intoregister the flame 38 will have access to the explosion-chamber and willexplode the gases therein, which will then be discharged into thepiston-chamber by the passing of the valve-section 30 through thepiston-chamber at the point of intersection. This operation is arrangedto take place just after the piston 14 passes such point ofintersection, so that the exploded gases are disllO I charged into thepiston-chamber behind the piston. Assoon as the explosionhas taken placethe perforation, 40 is closed again by the ,valve-section' and later bythe valvesection 31, which in the construction shown in Fig.3is'cylindrical in form, andv consequently extends over the perforation40. As already described, as soon as the valve-section 30 arrives at thepoint of intersection of the two chambers it closes the upper openinginto the piston-chamber, and such opening remains closed as long assaidsection is passing it and also while the section 31 is passing it, sothat it remains closed during the greater part of the rotation of thepiston, the spent gases from'the previous explosion being discharged inthe construction shown in Fig. 4 through the exhaust-port 27. The lowerpassage from the valve-chamber to the pistonchamber at the point ofintersection is also closed as soon as the valve-section 30 passesbeyond the point of intersection by the valvesection 31 and remainsclosed as long as such valve-section is passing, so that the explodedgases cannot expand except in the direction in which the piston ismoving, therebyoperating the pistonlargely by expansion.

It is evident that'instead of using a valvesection having theconstruction shown in Fig. 3 I may also use my improved igniting devicesin connection with a valve-section similar to that shown in my formerapplication and also illustrated in Fig. l, in the latter case theexhaust-port being arranged to comchamber; but as soonas thevalve-section 42 arrives opposite the exhaust-pipe 43 gases may escapefrom the piston-chamber in ad- Vance of the piston through thevalve-chamber above the valve-section 42 and thence, es-

cape through the exhaust-pipe 43, as described in my former application.

So far as concerns the igniting devices, therefore, my invention may beemployed with eitherof the styles of valve mechanism illus- Anexhaust-pipe 4:3 is provided,

trated. Furthermore, my invention is, not restricted to the. specific.details of the construction described, except in so far as such detailsare specifically claimed.

That whichI claim as my invention, and desire to secure by LettersPatent, is

1. A gas-engine, consisting of an annular valve-chamber, an annularpiston-chamberim tersectlng said valve-chamber, a plston in saldpiston-chamber, means in said valve-chamber for conductinggas to saidpiston-chamber, and a flame for exploding the tially as described.

2. A gas-engine consisting of annular intersectmg valve and pistonchambers, valve mechgas, substananism in said valve-chamber, said valvemech anism having an explosion-chamber adapted to receive gases to beexploded, means for supplying gases to said explosion-chamber, a flamefor exploding the'gases in said explo'sion chamber, and a piston insaidpiston-chamber, substantially as described. i

3. A gas-engine consisting of intersecting valve and piston chambers,valve mechanism v in said valve-chamber, said valve mechanism havlng anexploslon-chamber, aperforatlon in said valve-chamber adapted toregister with a perforation in the explosion-chamber section,

of said valve mechanism, afiame for exploding the gases in saidexplosion-chamber, and a pis ton in-said piston-chamber, substantiallyas.

described. I y

4:. In a gas-engine, the combinatlon of mtersecting valve andplstonchambers, a piston 1n said piston-chamber, valve mechanism in saidvalve-chamber adapted to conduct gases to be exploded to saidpiston-chamber, means for exploding said gases, and an exhaust-port insaid piston-chamber at. one side of the point of intersection of saidvalve and piston chambers, substantially as described.

5. In a gas-engine, the combination of intersecting valve and pistonchambers, a piston in said piston-chamber, valve mechanism in saidvalve: chamber, consisting of an explosionchamber section and. acylindrical section 31, means for igniting the gases in saldexploslonchamber section, and an exhausteport commumcatmg with saldpiston-chamber at one side of the point of intersection of said valveand piston chambers, substantially as described.

WILLIAM JEWELL.

v Witnesses: 1 S. H, JEW LL, JOHN L. JACKSON.

